Queremos subir un vehículo de 400 kg usando una presa hidráulica. Si la superficie que ocupa el coche es de 6 m2 , calcula la superficie mínima necesaria para hacerlo subir con una fuerza de 100 N

see earlier

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.

total distance/total time

(85 + 82)/(5+3)

167/8

20 just over